Same type of metal as the flashing material.
Roof to wall step flashing detail.
It may seem as if a single piece of flashing would offer more protection than many pieces of step flashing.
If you wanted to horizontal caulk it would only be at the top of the flashing.
Next install the step flashing with the next course of shingles over top of it.
N use step flashing that has a 2 to 4 inch lon ger vertical leg than normal.
Step flashing redirects the water back onto the shingle.
Even if one piece of step flashing fails the flashing and shingle below it start the process over again.
The metal flashing is formed with a hook edge and cleated on 12 centers.
N use flashing cement at joints to help secure flashing.
Where snow buildup is anticipated add a band of peel and stick membrane over the step flashing but under the sheathing wrap as shown.
Flashing joints are lapped 6 in the direction of water flow.
On a high wind wall low pitch vertical caulk at the roof edge of the flashing for insurance.
N at roof to wall intersections see figure 1.
N tape the top of step flashing with 4 inch wide minimum self adhering modified bitumen roof tape.
Guide to step flashing at building roof wall intersections.
The flashing material should be 4 inches by 7 inches in length when it lies on the roof deck.
This process will continue up the entire roof.
Step flashing needs to turn up a minimum of three inches up the sidewall.
Kick out flashing is a piece of flashing that hangs over the edge of the roof helping to divert water away from the adjacent wall or around any obstacles that the roof may butt into.
Factory shingle cut against the wall minimum 12 butted up snug.
Continuous flashing against a sidewall is one way to install a roof but it s not the correct way.
